package funkin;

import flixel.FlxSprite;
import flixel.FlxSubState;
import flixel.addons.transition.FlxTransitionableState;
import flixel.group.FlxGroup.FlxTypedGroup;
import flixel.input.keyboard.FlxKey;
import flixel.system.FlxSound;
import flixel.text.FlxText;
import flixel.tweens.FlxEase;
import flixel.tweens.FlxTween;
import flixel.util.FlxColor;
import funkin.Controls.Control;
import funkin.play.PlayState;

class PauseSubState extends MusicBeatSubstate
{
	var grpMenuShit:FlxTypedGroup<Alphabet>;

	var pauseOG:Array<String> = [
		'Resume',
		'Restart Song',
		'Change Difficulty',
		'Toggle Practice Mode',
		'Exit to menu'
	];
	var difficultyChoices:Array<String> = ['EASY', 'NORMAL', 'HARD', 'BACK'];

	var menuItems:Array<String> = [];
	var curSelected:Int = 0;

	var pauseMusic:FlxSound;

	var practiceText:FlxText;

	var exitingToMenu:Bool = false;
	var bg:FlxSprite;
	var metaDataGrp:FlxTypedGroup<FlxSprite>;

	public function new(x:Float, y:Float)
	{
		super();

		menuItems = pauseOG;

		pauseMusic = new FlxSound().loadEmbedded(Paths.music('breakfast'), true, true);
		pauseMusic.volume = 0;
		pauseMusic.play(false, FlxG.random.int(0, Std.int(pauseMusic.length / 2)));

		FlxG.sound.list.add(pauseMusic);

		bg = new FlxSprite().makeGraphic(FlxG.width, FlxG.height, FlxColor.BLACK);
		bg.alpha = 0;
		bg.scrollFactor.set();
		add(bg);

		metaDataGrp = new FlxTypedGroup<FlxSprite>();
		add(metaDataGrp);

		var levelInfo:FlxText = new FlxText(20, 15, 0, "", 32);
		levelInfo.text += PlayState.currentSong.song;
		levelInfo.scrollFactor.set();
		levelInfo.setFormat(Paths.font("vcr.ttf"), 32);
		levelInfo.updateHitbox();
		metaDataGrp.add(levelInfo);

		var levelDifficulty:FlxText = new FlxText(20, 15 + 32, 0, "", 32);
		levelDifficulty.text += CoolUtil.difficultyString();
		levelDifficulty.scrollFactor.set();
		levelDifficulty.setFormat(Paths.font('vcr.ttf'), 32);
		levelDifficulty.updateHitbox();
		metaDataGrp.add(levelDifficulty);

		var deathCounter:FlxText = new FlxText(20, 15 + 64, 0, "", 32);
		deathCounter.text = "Blue balled: " + PlayState.deathCounter;
		deathCounter.scrollFactor.set();
		deathCounter.setFormat(Paths.font('vcr.ttf'), 32);
		deathCounter.updateHitbox();
		metaDataGrp.add(deathCounter);

		practiceText = new FlxText(20, 15 + 64 + 32, 0, "PRACTICE MODE", 32);
		practiceText.scrollFactor.set();
		practiceText.setFormat(Paths.font('vcr.ttf'), 32);
		practiceText.updateHitbox();
		practiceText.x = FlxG.width - (practiceText.width + 20);
		practiceText.visible = PlayState.isPracticeMode;
		metaDataGrp.add(practiceText);

		levelDifficulty.alpha = 0;
		levelInfo.alpha = 0;
		deathCounter.alpha = 0;

		levelInfo.x = FlxG.width - (levelInfo.width + 20);
		levelDifficulty.x = FlxG.width - (levelDifficulty.width + 20);
		deathCounter.x = FlxG.width - (deathCounter.width + 20);

		FlxTween.tween(bg, {alpha: 0.6}, 0.4, {ease: FlxEase.quartInOut});
		FlxTween.tween(levelInfo, {alpha: 1, y: 20}, 0.4, {ease: FlxEase.quartInOut, startDelay: 0.3});
		FlxTween.tween(levelDifficulty, {alpha: 1, y: levelDifficulty.y + 5}, 0.4, {ease: FlxEase.quartInOut, startDelay: 0.5});
		FlxTween.tween(deathCounter, {alpha: 1, y: deathCounter.y + 5}, 0.4, {ease: FlxEase.quartInOut, startDelay: 0.7});

		grpMenuShit = new FlxTypedGroup<Alphabet>();
		add(grpMenuShit);

		regenMenu();

		// cameras = [FlxG.cameras.list[FlxG.cameras.list.length - 1]];
	}

	private function regenMenu():Void
	{
		while (grpMenuShit.members.length > 0)
		{
			grpMenuShit.remove(grpMenuShit.members[0], true);
		}

		for (i in 0...menuItems.length)
		{
			var songText:Alphabet = new Alphabet(0, (70 * i) + 30, menuItems[i], true, false);
			songText.isMenuItem = true;
			songText.targetY = i;
			grpMenuShit.add(songText);
		}

		curSelected = 0;
		changeSelection();
	}

	override function update(elapsed:Float)
	{
		if (pauseMusic.volume < 0.5)
			pauseMusic.volume += 0.01 * elapsed;

		super.update(elapsed);

		var upP = controls.UI_UP_P;
		var downP = controls.UI_DOWN_P;
		var accepted = controls.ACCEPT;

		#if debug
		// to pause the game and get screenshots easy, press H on pause menu!
		if (FlxG.keys.justPressed.H)
		{
			bg.visible = !bg.visible;
			grpMenuShit.visible = !grpMenuShit.visible;
			metaDataGrp.visible = !metaDataGrp.visible;
		}
		#end

		if (!exitingToMenu)
		{
			if (upP)
			{
				changeSelection(-1);
			}
			if (downP)
			{
				changeSelection(1);
			}

			var androidPause:Bool = false;

			#if android
			androidPause = FlxG.android.justPressed.BACK;
			#end

			if (androidPause)
				close();

			if (accepted)
			{
				var daSelected:String = menuItems[curSelected];

				switch (daSelected)
				{
					case "Resume":
						close();
					case "EASY" | 'NORMAL' | "HARD":
						PlayState.currentSong = SongLoad.loadFromJson(PlayState.currentSong.song.toLowerCase(), PlayState.currentSong.song.toLowerCase());
						SongLoad.curDiff = daSelected.toLowerCase();

						PlayState.storyDifficulty = curSelected;

						PlayState.needsReset = true;

						close();

					case 'Toggle Practice Mode':
						PlayState.isPracticeMode = !PlayState.isPracticeMode;
						practiceText.visible = PlayState.isPracticeMode;

					case 'Change Difficulty':
						menuItems = difficultyChoices;
						regenMenu();
					case 'BACK':
						menuItems = pauseOG;
						regenMenu();
					case "Restart Song":
						PlayState.needsReset = true;

						close();
					// FlxG.resetState();
					case "Exit to menu":
						exitingToMenu = true;
						PlayState.seenCutscene = false;
						PlayState.deathCounter = 0;

						for (item in grpMenuShit.members)
						{
							item.targetY = -3;
							item.alpha = 0.6;
						}

						FlxTween.tween(bg, {alpha: 1}, 0.4, {
							ease: FlxEase.quartInOut,
							onComplete: function(_)
							{
								FlxTransitionableState.skipNextTransIn = true;
								FlxTransitionableState.skipNextTransOut = true;

								FlxG.cameras.list[1].alpha = 0; // bullshit for the UI camera???

								if (PlayState.isStoryMode)
									FlxG.switchState(new StoryMenuState());
								else
									FlxG.switchState(new FreeplayState());
							}
						});
				}
			}

			if (FlxG.keys.justPressed.J)
			{
				// for reference later!
				// PlayerSettings.player1.controls.replaceBinding(Control.LEFT, Keys, FlxKey.J, null);
			}
		}
	}

	override function destroy()
	{
		pauseMusic.destroy();

		super.destroy();
	}

	function changeSelection(change:Int = 0):Void
	{
		FlxG.sound.play(Paths.sound('scrollMenu'), 0.4);

		curSelected += change;

		if (curSelected < 0)
			curSelected = menuItems.length - 1;
		if (curSelected >= menuItems.length)
			curSelected = 0;

		for (index => item in grpMenuShit.members)
		{
			item.targetY = index - curSelected;

			item.alpha = 0.6;
			// item.setGraphicSize(Std.int(item.width * 0.8));

			if (item.targetY == 0)
			{
				item.alpha = 1;
				// item.setGraphicSize(Std.int(item.width));
			}
		}
	}
}